May 12, 2014

Arena Pharmaceuticals Provides Corporate Update and Reports First Quarter 2014 Financial Results

-- Conference Call and Webcast Scheduled for Today at 5:00 p.m. Eastern Time --

SAN DIEGO, May 12, 2014 /PRNewswire/ -- Arena Pharmaceuticals, Inc. (NASDAQ: ARNA) today provided a corporate update and reported financial results for the first quarter ended March 31, 2014.

"We are off to a productive start in 2014 with significant new marketing initiatives for BELVIQ® for chronic weight management, the advancement of our lorcaserin life-cycle management programs and the development of our internally discovered pipeline," said Jack Lief, Arena's President and Chief Executive Officer. "Prescriptions for BELVIQ increased 31% in the first quarter over the previous quarter, and Eisai continues to boost its investment in key strategic areas."

First Quarter and Recent Developments

BELVIQ® (lorcaserin HCl) CIV US Commercial Update

    --  Approximately 77,000 prescriptions for BELVIQ were filled in the first
        quarter of 2014, according to IMS Health, representing growth of
        approximately 31% in total prescriptions as compared to the previous
    --  Eisai recorded net product sales for BELVIQ of $8.4 million in the first
        quarter of 2014.
    --  Eisai announced plans to add another 200 representatives to its sales
        force for BELVIQ by July 2014, increasing the number of representatives
        to approximately 600. Eisai believes this expansion of the sales force
        will enable them to reach approximately 90,000 physicians in the United
        States. This increase is in addition to the 200 sales representatives
        for BELVIQ that Eisai added around the end of 2013.
    --  Eisai announced that its continued work to expand reimbursement has
        resulted in additional insurance coverage for BELVIQ. According to
        Fingertip Formulary, the number of insured commercial lives in the
        United States with access to BELVIQ is now estimated to exceed 60%.
        While the exact coverage for BELVIQ varies by each patient's insurance
        plan, this improved access means more patients will receive coverage
        support from their health plan or pharmacy benefit manager.
    --  Eisai launched a national television advertising campaign for BELVIQ
        that illustrates the struggles many people face with appetite and body
        weight. The television advertisement is airing on numerous networks,
        including Lifetime, Oxygen and AMC, and presents BELVIQ as a targeted
        approach to weight loss, that, when combined with diet and increased
        activity, may help patients lose weight and keep it off.
    --  Eisai Laboratorios Ltda. filed for marketing authorization of BELVIQ as
        a treatment for chronic weight management in Brazil. In connection with
        the filing, Arena achieved a $0.5 million milestone payment from Eisai.

Research & Development

    --  Eisai completed enrollment in a 12-week pilot study of lorcaserin and
        phentermine when co-administered. The primary endpoint of this study is
    --  Arena initiated dosing in a 12-week randomized, double-blind and
        placebo-controlled Phase 2 clinical trial that will enroll approximately
        600 active smokers to evaluate lorcaserin as a potential aid to smoking
    --  Ildong Pharmaceutical Co., Ltd., initiated dosing in a Phase 1
        multiple-ascending dose clinical trial of temanogrel, an orally
        available inverse agonist of the serotonin 2A receptor intended for the
        treatment of thrombotic diseases.

First Quarter 2014 Financial Results

    --  Revenues totaled $6.8 million, including $2.9 million in net product
        sales of BELVIQ, of which $2.7 million represented 31.5% of Eisai's net
        product sales and $0.2 million related to redemptions of the 15-day free
    --  Research and development expenses totaled $21.0 million.
    --  General and administrative expenses totaled $8.0 million.
    --  Net loss was $25.3 million, or $0.12 per share.
    --  At March 31, 2014, cash, cash equivalents and short-term investments
        available-for-sale totaled $256.5 million.
    --  At March 31, 2014, approximately 219.5 million shares of common stock
        were outstanding.

Scheduled Conference Call and Webcast

Arena will host a conference call and webcast to provide a corporate update and report first quarter 2014 financial results today at 5:00 p.m. Eastern Time (2:00 p.m. Pacific Time). The conference call may be accessed by dialing 877.643.7155 for domestic callers and 914.495.8552 for international callers. Please specify to the operator that you would like to join the "Arena Pharmaceuticals' First Quarter 2014 Financial Results Call." The conference call will be webcast live under the investor relations section of Arena's website at and will be archived there for 30 days following the call. Please connect to Arena's website several minutes prior to the start of the broadcast to ensure adequate time for any software download that may be necessary.

Upcoming Conference Participation

Arena is planning to participate at upcoming investment and industry conferences, including:

    --  Jefferies 2014 Global Healthcare Conference, June 2-5, 2014, New York,
        New York
    --  American Diabetes Association's 74(th) Scientific Sessions, June 13-17,
        2014, San Francisco, California
    --  Wells Fargo Securities Healthcare Conference, June 17-18, 2014, Boston,
    --  Piper Jaffray Heartland Summit, August 6-7, 2014, Minneapolis, Minnesota

About BELVIQ® (lorcaserin HCl) CIV

BELVIQ (pronounced BEL-VEEK) is approved by the US Food and Drug Administration for chronic weight management and is available by prescription in the United States. BELVIQ( )is believed to decrease food consumption and promote satiety by selectively activating serotonin 2C receptors in the brain. The exact mechanism of action is not known. For more information about BELVIQ, click here for the full Prescribing Information or visit

BELVIQ is indicated to be used along with a reduced-calorie diet and increased physical activity for chronic weight management in adult patients with an initial body mass index of:

    --  30 kg/m(2) or greater (obese), or
    --  27 kg/m(2) or greater (overweight) in the presence of at least one
        weight-related comorbid condition (e.g., hypertension, dyslipidemia,
        type 2 diabetes).

Limitations of Use:

    --  The safety and efficacy of coadministration of BELVIQ with other
        products intended for weight loss including prescription drugs (e.g.,
        phentermine), over-the-counter drugs, and herbal preparations have not
        been established.
    --  The effect of BELVIQ on cardiovascular morbidity and mortality has not
        been established.

In clinical trials, the most common adverse reactions for patients without diabetes treated with BELVIQ were headache, dizziness, fatigue, nausea, dry mouth, and constipation. In patients with diabetes, the most common adverse reactions were hypoglycemia, headache, back pain, cough, and fatigue.

Arena has granted exclusive marketing and distribution rights to Eisai for most territories worldwide, to Ildong Pharmaceutical Co., Ltd., for South Korea, and to CY Biotech Company Limited for Taiwan. Arena plans to enter into additional collaborations to commercialize BELVIQ in Australia, New Zealand and Israel.

About Arena Pharmaceuticals

Arena is embracing the challenge of improving health by seeking to bring innovative medicines targeting G protein-coupled receptors to patients. BELVIQ® (lorcaserin HCl), Arena's internally discovered drug, is approved in the United States and is under review for regulatory approval in additional territories. Arena's US operations are located in San Diego, California, and its operations outside of the United States, including its commercial manufacturing facility, are located in Zofingen, Switzerland. For more information, visit Arena's website at

Arena Pharmaceuticals® and Arena® are registered service marks of Arena Pharmaceuticals, Inc. BELVIQ® is a registered trademark of Arena Pharmaceuticals GmbH.

Forward-Looking Statements

Certain statements in this press release are forward-looking statements that involve a number of risks and uncertainties. Such forward-looking statements include statements about the advancement, therapeutic indication, use, safety, efficacy, mechanism of action and potential of BELVIQ or lorcaserin; productivity of the start in 2014; significance of marketing initiatives; advancement of lorcaserin life-cycle management programs; development of Arena's pipeline; Eisai's investment, including the strategic importance of the investment areas; the sales force for BELVIQ, including plans to increase the number of representatives and related timing, significance and other expectations; reimbursement coverage for BELVIQ, including efforts to expand coverage, additional coverage, patient access and significance; regulatory review and approval and commercialization of BELVIQ; the protocol, design, scope, enrollment, timing, expectations and other aspects of Arena's or its collaborators' studies or trials; plans to enter into additional collaborations and the commercialization of BELVIQ in additional territories; embracing the challenge of improving health; seeking to bring innovative medicines to patients; and Arena's focus, plans, goals, strategy, expectations, research and development programs, and ability to discover and develop compounds and commercialize drugs. For such statements, Arena claims the protection of the Private Securities Litigation Reform Act of 1995. Actual events or results may differ materially from Arena's expectations. Factors that could cause actual results to differ materially from the forward-looking statements include, but are not limited to, the following: risks related to commercializing drugs, including regulatory, manufacturing, supply and marketing issues and the availability and use of BELVIQ; cash and revenues generated from BELVIQ, including the impact of competition; Arena's revenues will be based in part on estimates, judgment and accounting policies, and incorrect estimates or disagreement regarding estimates or accounting policies may result in changes to Arena's guidance or previously reported results; the timing and outcome of regulatory review is uncertain, and BELVIQ may not be approved for marketing when expected or ever in combination with another drug, for another indication or using a different formulation or in any other territory for any indication; regulatory decisions in one territory may impact other regulatory decisions and Arena's business prospects; government and commercial reimbursement and pricing decisions; risks related to relying on collaborative arrangements; the timing and receipt of payments and fees, if any, from collaborators; the entry into or modification or termination of collaborative arrangements; unexpected or unfavorable new data; nonclinical and clinical data is voluminous and detailed, and regulatory agencies may interpret or weigh the importance of data differently and reach different conclusions than Arena or others, request additional information, have additional recommendations or change their guidance or requirements before or after approval; data and other information related to any of Arena's research and development may not meet regulatory requirements or otherwise be sufficient for (or Arena or a collaborator may not pursue) further research and development, regulatory review or approval or continued marketing; Arena's ability to obtain and defend patents; the timing, success and cost of Arena's research and development; results of clinical trials and other studies are subject to different interpretations and may not be predictive of future results; clinical trials and other studies may not proceed at the time or in the manner expected or at all; having adequate funds; and satisfactory resolution of litigation or other disagreements with others. Additional factors that could cause actual results to differ materially from those stated or implied by Arena's forward-looking statements are disclosed in Arena's filings with the Securities and Exchange Commission. These forward-looking statements represent Arena's judgment as of the time of this release. Arena disclaims any intent or obligation to update these forward-looking statements, other than as may be required under applicable law.

                                              Arena Pharmaceuticals, Inc.

                                    Condensed Consolidated Statements of Operations

                                       (In thousands, except per share amounts)

                                                                                         Three months

                                                                                          March 31,

                                                                                        2014          2013
                                                                                        ----          ----



    Net product sales                                                                 $2,882            $0

    Eisai collaborative revenue                                                        3,347         1,495

    Manufacturing services                                                               448           765

    Other collaborative revenue                                                          137           113
                                                                                         ---           ---

      Total revenues                                                                   6,814         2,373
                                                                                       -----         -----

    Operating Costs & Expenses

    Cost of product sales                                                                831           473

    Cost of manufacturing services                                                       496         1,645

    Research & development                                                            20,988        14,008

    General & administrative                                                           8,037         7,251

      Total operating costs &  expenses                                               30,352        23,377

    Interest & Other Income (Expense)

    Interest income                                                                       29            24

    Interest expense                                                                  (1,747)       (1,787)

    Gain (Loss) from valuation of derivative liabilities                                (110)        3,859

    Other                                                                                111            32
                                                                                         ---           ---

      Total interest & other income (expense), net                                    (1,717)        2,128
                                                                                      ------         -----

    Net loss                                                                        $(25,255)     $(18,876)
                                                                                    ========      ========

    Net loss per share:

    Basic                                                                             $(0.12)       $(0.09)
                                                                                      ======        ======

    Diluted                                                                           $(0.12)       $(0.09)
                                                                                      ======        ======

    Shares used in calculating net loss per share:

    Basic                                                                            219,222       217,503
                                                                                     =======       =======

    Diluted                                                                          219,222       217,503
                                                                                     =======       =======

                                                                             Arena Pharmaceuticals, Inc.

                                                                      Condensed Consolidated Balance Sheet Data

                                                                                    (In thousands)

                                                                                                                March 31, 2014         December 31, 2013
                                                                                                                --------------         -----------------

                                                                                                                 (unaudited)                           (1)


      Cash & cash equivalents                                                                                                 $203,272           $221,878

      Short-term investments, available-for-sale                                                                                53,234                  0

      Accounts receivable                                                                                                        1,552             10,602

      Inventory                                                                                                                 11,947             12,759

      Prepaid expenses & other current assets                                                                                    6,363              3,571

      Land, property & equipment, net                                                                                           78,046             77,388

      Acquired technology & other non-current assets                                                                            13,282             13,609
                                                                                                                                ------             ------

           Total assets                                                                                                       $367,696           $339,807
                                                                                                                              ========           ========

    Liabilities & Stockholders' Equity

      Accounts payable & accrued liabilities                                                                                   $29,412            $30,827

      Total deferred revenues                                                                                                  134,618            139,190

      Total derivative liabilities                                                                                               5,002              4,892

      Total lease financing obligations & other long-term liabilities                                                           72,609             73,041

      Total stockholders' equity                                                                                               126,055             91,857
                                                                                                                               -------             ------

           Total liabilities & stockholders' equity                                                                           $367,696           $339,807
                                                                                                                              ========           ========

    1                                The Condensed Consolidated
                                     Balance Sheet Data has
                                     been derived from the
                                     audited financial
                                     statements as of that

    Contact: Arena Pharmaceuticals, Inc.     Media Contact: Russo Partners

    Craig Audet, Senior Vice President,      David Schull, President

    Operations and Head of Global Regulatory
     Affairs                                 [email protected]

    [email protected]                    858.717.2310

    858.453.7200, ext. 1612

SOURCE Arena Pharmaceuticals, Inc.